Driving mechanism for textile edge folding machines



Aug. 14, 1934. B ROBY 1,969,820

DRIVING MECHANISM FOR TEXTILE EDGE FOLDING MACHINES Filed May 24, 191 33 2 Sheets-Sheet l INVENTOR [gen/d3 3 05 ATTORNEY E. B. ROBY 1,969,820

DRIVING" MECHANISM FOR TEXTILE EDGE FOLDING MACHINES Aug.- 14, 1934.

FiledxMay 24. 1933 ZSheets-Sheet 2 1 QINVENTOR [dd aid 13. Zoq

ATTORNEY Gil Patented Aug. 14, 1934 TES UNITED STA DRIVING MECHANISM FOR TEXTILE EDGE FOLDING MACHINES Edward B. Roby, New 'Yo rk,.N. Y., assignor to The S and R Folding Machine 00., Inc., New York,

N. Y., a corporation of Application May 24, 1

4 Claims.

The present invention relates particularly to improvement 111:8, driving mechanism for folding machines such as disclosed in a Patent No. 1,679,375 granted to me under date of August 7,

Among the principal objects which the present invention has in View are: To simplify the power mechanism and the operation thereof; to overcome all tendency to breakage requiring repair incident thereto; and to promote silent action of the machine.

Drawings:

Figure 1 is a sectional plan view of a power unit of the herein disclosed mechanism as mount- I ed on the lower or frame structure of a folding machine of the character mentioned.

Figure 2 is a vertical section of the power unit, the section being taken as on the line 22 in Figure 1.

Figure 3 is a vertical section of the same, the section being taken as on the line 33 in Figure 1.

Figure 4 is a vertical section of the unit, the section being taken on the line 41 in Figure 1.

Figure 5 is a sectional plan view of a portion of the operating mechanism of said power unit, the section being taken as on the line 5-5 in Figure 3.

Description:

As seen by reference to the patent above mentioned, the pressure applied to the edges of textile articles being treated has been through the medium of gear wheels and power multiplying devices suchas toggles, etc. resulting ultimately in applying pressure to dies as set forth in said patent. The objections to this mechanism are substantially as stated above, delicacy of mechanism adapted to cause breakage in parts thereof, and noise as in the transmission or reversal of power operation. In partial substitution of said mechanism in the present invention, a screw jack is employed, the main feature of which is the elongated screw shaft 12.

The shaft 12 of the present disclosure is to 1 function in the same manner as the lower extension 30 of the shaft 20 shown and described in the above indicated patent.

Referring to the drawings, particularly to Figure 2 thereof, it will be noted that the screw shaft i 12 is in the neutral position wherein the machine with which it is connected is at rest. The movement of the screw shaft 12 is controlled by a threaded nut 13, the threads whereof mesh with the threads of the shaft 12. Rigidly mounted on the nut 13 is the collar 14.

New York 933, Serial No. 672,640

The ends of the nut '13 are reduced to be fitted with bearing ball races 15 fully equipped to take the thrust exerted thereupon by the shaft 12. The races 15 are mounted, respectively, in the arched yoke 16 and in the base 17 thereof.

The operation of the screw shaft 12 is controlled by a motor such as the electric motor 18 shown in the drawings. To this end the motor is provided with a friction cone 19 disposed at v the end of its armature shaft, the face of the cone being disposed at an angle to correspond with the angle of the outwardly flared flanges 20 and 21 disposed at the upper and lower end, respectively, of the collar 14.

In forming the angle of the cone 19, there is to be considered that the motor 18 is rocked to depress or elevate the cone 19 when it is sought to effect the engagement of the cone with the flanges 20 or 21. The clearance of the cone 19 with the flanges 2O and 21 in the neutral position, as shown in Figure 2, is slight.

The motor 18 is mounted on a rocking platform 22, the supporting brackets 23 whereof have pivotal engagement with the shaft 24.

As best seen in Figure 4 of the drawings, the brackets 23 supp rt one side of the platform 22 while the opposite edge is equipped with a bracket 25.

The platform 22 is rocked manually, the operator using for this purpose a foot treadle mounted at the end of the bar 27. The bar 27 is pivoted at 28 in brackets 29 let down from the frame of the machine and is normally supported by the lower arm 30 of a yoke at the end of the bracket 25.

The yoke has the two arms 30 and 31, as seen best in Figure 2 of the drawings. In Figure 3 is shown the bar 27 resting on the rounded upper surface of the arm 30 of the yoke of the bracket 25 where it is firmly held in position by a compression spring 32. The spring 32 is held in position and regulated as to pressure by the screw nut 33.

In the neutral position of the screw shaft 12 and the nut 13, the bracket 25, platform 22 and motor 18 are supported upon a bracket 34 which extends below in engagement with a flange 35 laterally extended from the arm 31.

It will be noted that when the parts above enumerated are in the neutral position disclosed in the drawings, the collar 36 at the lower end of the shaft 12 is in butted relation to the frame of the machine.

When now, with the parts disposed as shown in the drawings and as above described, it is de- Ill) sired to operate, the foot treadle 26 is depressed.

The bar 27 is rocked on its pivot 28 to be lifted from the lower arm 30 of the bracket 25. The spring 32 may be regarded as a shock absorber or buffer spring. The bracket 25 is limited and the platform 22 is raised at the edge thereof from which the bracket 25 is pendant. The result of the rock of the platform is that the cone 19 is lifted into contact With the upper flange 20 of the collar 14 and not 13.

If power has been applied to the motor 18 and the cone 19 is rotating, the nut 13 is revolved, with the result that the screw shaft 12 is lowered, the threads of the screw shaft and nut being arranged to accommodate this movement.

In the descent of the shaft 12, carrying with it the collar 36, and the bracket 34 thereof, this bracket engages the flange 37 which extends from the lower arm 30 of the bracket 25. When this occurs, the bracket 25 is automatically rocked to depress theplatform 22 to such an extent that the cone 19 engages the flange 21 to reverse the rotation of the nut 13.

The spring 32is sufficiently strongto hold the bar 27 and the bracket 25 in the depressed position just described until the cone 19 has rotated the nut 13 to elevate the shaft 12 and parts connectedtherewith to the neutral position shown in the drawings.

It will be noted that the platform 22 is slidably mounted on the shaft 24. This is to permit the adjustment of the Working position with reference to the cone 19 to the collar 14 and the flan es 20 and 21 thereof. To this end, a heavy lag bolt 38 is mounted in the frame of the machine, while a heavy spring 39 is attached to the frame of the machine and to the platform 22. The spring holds the platform 22 with the motor 18 mounted thereon but against the end of the bolt 38 which rests in the path of the bracket 23.

From the foregoing, it is obvious thatthe machine is automatic in the action resulting from the operator depressing the treadle 26.

As set forth in the patent above referred to, the operation of the machine with which the present mechanism is connected is inaugurated and completed with the depression of the shaft 12.

I claim:

1. A' driving mechanism as characterized embodying a screw-threaded lifting shaft, a nut thread-engaged with said shaft and permanently supported in the frame of the, structure equipped with said driving mechanism, a prime mover adapted to engage said nut to rotate the same successively. in relatively reverse directions at will, means for normally releasing said prime mover from engagement with said nut, said means embodying a rockable support for said prime mover, manual controls for said support adapted to rock the same at will, and means for adjusting the Working relation of said prime mover to said nut.

2. A driving mechanism as characterized embodying a screw-threaded lifting shaft, a nut thread-engaged with said shaft and permanently supported in the frame of the structure equipped with said driving mechanism, a prime mover adapted to engage said nut to rotate the same successively in relatively reverse directions at will, means for normally releasing said prime mover from engagement with said nut, said means embodying a rockable support for said prime mover, manual controls for said support adapted to rock the same at will, and means for adjusting the working relation of said prime mover to said nut, said means embodying a resilient member interposed between said manual controls and said support, said member being adapted for disposing said controls in position to effect the disposition of said prime mover to establish the neutral relation thereof to said nut.

3. In a driving mechanism as characterized, .a screw-threaded lifting shaft, a nut thread-engaged with said shaft, said nut having outwardly flared flanges, a prime 'mover having a cone shaped member for engaging said flanges successively, a support for said prime mover, said support embodying a rocking platform, said platform being normally supported by a pivot shaft and said screw-threaded shaft, a manual control operatively engaging said platform to rock said platform to effect. the engagement between said prime mover and said nut to rotate the latter, and means formed on said lifting shaft for reversing the operative condition of said prime mover and said nut.

4. In a driving mechanism as characterized, a screw-threaded lifting shaft, a nut thread-engaged with said shaft, said nut having outwardly flared flanges, a prime mover having a cone shaped member for engaging said flanges successively, a support for said prime mover, said support embodying a rocking platform, said platform being normally supported by a pivot shaft and said screw-threaded shaft, a manual control operatively engaging said platform to rock said platform to effect the engagement between said prime mover and said nut to rotate the latter, means formed on said lifting shaft for reversing the operative condition of said prime mover and said nut, and a resilient member interposed between said manual control and the support for said platform for returning said control to its normal position, and the said control and said prime mover to their normal positions.

I EDWARD B. ROBY. 

